Between the ATH-MSR7b and Px8, the ATH-MSR7b comes out ahead in weight and driver size, while the Px8 wins on active noise cancellation and multipoint. Overall, the ATH-MSR7b scores 66.2 and the Px8 scores 67.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (66.2 vs 67.4). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the ATH-MSR7b if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight, driver size.
Pick the Px8 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are active noise cancellation, multipoint, battery life.
Both ship with comparable spatial audio, ldac, water resistance, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Audio-Technica - ATH-MSR7b wins
- ▲Weight — 30.00 g less. 290 vs 320.
- ▲Driver size — 12.50% more. 45 mm vs 40 mm.
Why Bowers & Wilkins - Px8 wins
- ▲Has Active noise cancellation.
- ▲Has Multipoint.
- ▲Battery life: 30 h vs 0 h.
Spec comparison
Design
| Spec | Audio-Technica - ATH-MSR7b | Bowers & Wilkins - Px8 |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 290 glead | 320 g |
| Water resistance | none | none |
Audio
| Spec | Audio-Technica - ATH-MSR7b | Bowers & Wilkins - Px8 |
|---|---|---|
| Driver sizeⓘ | 45 mmlead | 40 mm |
| Impedanceⓘ | 36 Ωlead | 32 Ω |
| Sensitivityⓘ | 101 dB | 111 dBlead |
| Active noise cancellationⓘ | false | truelead |
| Transparency mode | false | truelead |
| Spatial audioⓘ | false | false |
Battery
| Spec | Audio-Technica - ATH-MSR7b | Bowers & Wilkins - Px8 |
|---|---|---|
| Battery life | 0 h | 30 hlead |
| Fast chargeⓘ | false | truelead |
Connectivity
| Spec | Audio-Technica - ATH-MSR7b | Bowers & Wilkins - Px8 |
|---|---|---|
| Bluetoothⓘ | 0.0 | 5.2lead |
| Multipointⓘ | false | truelead |
| 3.5mm jack | true | true |
| LDACⓘ | false | false |
| aptX HDⓘ | false | truelead |
Frequently asked
Which has better battery life, ATH-MSR7b or Px8?+
Px8 lasts 30 hours vs 0 hours.
Do ATH-MSR7b or Px8 have active noise cancellation?+
Px8 has ANC; ATH-MSR7b does not.
Which supports LDAC, ATH-MSR7b or Px8?+
Neither supports LDAC.
Spec-level deep dives
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